I did not expect it, but today Square Enix announced a new expansion for Final Fantasy XI, called Wings of the Goddess (but I like the Japanese title - something along the line of The Holy Warriors of Altana - more). There's also a trailer available on the main PlayOnline page.

From what I can see it looks like a time-warp expansion, set back in time in the Crystal War, but the images are scarce. It's been announced for Winter 2007, I'll see how it will be. I hope it's not like Treasures of Aht Urghan, which was a disappointment all along.